The staff at this hotel are fantastic: lots of people speak English, and they're always happy to help with taxis and advice about trips and travel around Rome.
The hotel itself has a bit of an ageing interior. The aircon in my room didn't really work (though it was 36 degrees C outside) so it was pretty uncomfortable. The lobby and restaurant are beautiful, but the food is the worst I've ever had to pay for: think microwaved lasagne served slightly cold and tuna salad out of a can.
The area is a little rough -- it's fine if you're on a business trip and you know your way around Rome/the subway system, but if you're on holiday, don't stay in this part of the city. East of the Tiber is much better for seeing the best of Rome!